Updating the fan need as it is apparently a "346" fan that I need (still 5 blade 19" Flex Fan), not a 480033 which I guess did not come out until 1970?? Do not have a master parts book, but that is what I am being told.

Also, likely need less than a 2" spacer as the radiator is a 4 core and pushes the fan shroud closer to the engine block.